吳崧晹python讀取CSV檔案SPDR標普500ETF在1993/1/29至2025/3/20
#吳崧晹python程式碼分析spy:標準500ETF
import csv #輸入套件csv=comma seperated value #輸入csv套件comma separated value
file = open('SPY.CSV','r') #打開下載的檔案SPY.CSV,模式是r讀取,
csvreader = csv.DictReader(file) #將檔案讀入變數csvreader
for row in csvreader: #檔案接續逐列附加append於rows串列
# print(row)
print(row['日']+' 當天收盤價 '+row['收'])
file.close() #關閉檔案
#上一個作業讀近來放成串列list,直接讀成字典
https://d11117328.blogspot.com/2025/06/pythoncsvtkintermarkowitz.html
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